Improved device foe shabpendtg hoese-shoe calks



J. JOHNSON. DEVICE FOR SHARLPENING HORSESHOE OALKS. No. 73,901.

Patented Jan. 28, 1868.

m'fizesaea:

JOHN JOHNSON, .OF HARRINGTON, NEW YORK.

Letters Patent 1V0. 73,901, dated January 28, 1868.

IMPROVED DEVICE FOR SHARPENING HORSE-SHOE GALKS.

dip firlgrhule meant in in ilgtit Eiders pan mm mating put a tip same.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN JoHNsoN, of Barrington, county of Yates, and Stateof New York, have invented a new and useful Improvement inMachine for Sharpening Horse-Shoe Oalks; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the accompanying drawings, in which- Figure l is a perspective view of my impoved machine or sharpener, represented as applied to the shoe upon the horses foot,--'and' adapted to operate upon-the toe-calk- Figure 2 is a. vertical section of thesame, taken in the direction of the length of the clamp-bar.

Figure 3 is a perspective view of the circular file detached. I

Similar letters of reference denote corresponding parts in all the figures.

My invention relates to a novelconstruction and arrangement of parts of a machine for sharpening horseshoe calks, adapted to be used for'sharpening the celks while the shoe is secured to the horses foot, thereby obviating the necessity for removing the shoe for that purpose; and it consists in the employment of an adjustable clamp, adapted to be secured to the shoe, and armed with a rotary, circular, or cylindrical file, operating as hereinafter described. It further consists in making the rotary file adjustable relative to its holding-clamp and the shoe in such manner as to adapt it to operate no n the several calks without changing the position of the clamp, as hereinafter described.

In the accompanying drawings, A represents the clamp bar, to the lower face of .which the holding-clamps B B are secured, one of said clamps B being cast with or otherwise rigidly connected to the bar A, and the other, B, being made adjustable on said bar, in such manner that it may beadjusted nearer to or further from the clamp B. In thedrawing, the clamp B, which consists of an angle-iron, or a short horizontal bar having vertical lugs or cars at its ends, and provided with a set-screw, bymeans of which, and the opposing lug, the

shoe is seized and held, is represented as provided with a set-screw or screws, or an adjustable shank of dovetail form, fitting and working back and forth in a-slot of corresponding form in the bar A, for the purpose of cheating the desired adjustment of said clamp relativetofixed clamp B. Other means for effecting this adjust-' mentimaybc used if preferred. The purpose of the clamps isito secure the machine or implement firmly to the shoe upon the opposite arms or sides thereof, and byv the adjustment described, the distance of the clamps from each other is varied to suit the varying sizes or widths-of shoes to 'which it may be applied. The bar A, as represented, is made of dove-tail form, (narrowest at. the bottom) and has attached to it a slide, 0, having a dove-tail groove or recess fitting bar A, and provided-with a-central pivot or swivel, D, upon the enlarged, squared head of which is mounted the adjustable carrying-arm Said arm E is madein form substantially as represented in fig. 1, and is slotted to receive the swivel-head. D, and adapt it to be adjusted longitudinally thereon. F a cap-piece or straddling standard, embracing the swinging arm, and resting atthe opposite sides thereof upon the clampbar, andf is a se't screW, passing centrally through capF, and into the swivel-head D, for the purpose .of tightening the slide upon the clamp-bar, after'it has been adjusted to the desired position thereon. G is a circular file, .mountedin the fork ut the outer swinging end'of arm E upon a vertical or slightlyinclined shaft, H, which has its bearings in the fork e e'.- Said lile is keyed or otherwise secured to shaft-H in such manner as to turn with the shaft when the latter is rotated. The upper end of the shaft is squared to receive the crank-arm I, by'which it is operated. J is a removable cap-plate, secured to the swinging arm '15, by means of a-set-screw, or-other equivalent device. The plate J is made in form represented in the sectional perspective view, fig. 4, being provided with a collar or sleeve which embraces the shaft, and fits in the socket or hearing in arm e said socket or hearing being necessarily enlarged, to permit the insertion and withdrawal of the enlarged or squared portion of the. shaft upon which the circular filo is mounted. Said plate J serves to hold'the shaft in place in its hearings in arms -e a, and by its removal, and the withdrawal of the shaft endwise,

the filo is released, and may be readily removed and replaced when desired. K is a hand e, secured to the swinging arm E at its heel-end,-by means of which the said arm is contrblled in its movements, and the-desired essure given to the filewhen in operation.

Inoperation, the clamp-bar, with its swinging arm and other appendages, is firmly clemped to the shoe in n.

manner that will be readily understood from the foregoing description. The operator then adjusts the swinging arin upon said bar, to bring it into the desired relation-to the call: to be operated upon, when, seizing thelzandle K, the desired pressure of the file against the calk may be give'in, while, at the same time, by vibrating the handle, the file is made to traverse back and-forth over the call ,and the required rotation being given thereto through the crank.I,tl1e-calk is readily and rapidly filed away, unti1 the desired degree of sharpness is secured. It will be seen that the shaft of the file, while in operation, is in a vertical, or nearly vertical position, or, in

other words,in a. line parallel, or nearly parallel with the calk, in the direction of its depth or length. It muy be slightly varied from such parallel relation, to causeit to cut inore rapidly at the point of the ealk, or, if preferred, the file may be made in the form of a section of ti. cone, or with a bevelled face, to give it the desired angle. Other modifications may be made in thei'orm of the parts, or in the means for effecting the several adjustments described, without departing from my invention.

Having now described the construction end operation of my invention, what I claim, and desire to secure by Letters Patent, is 1. The clump-bar A, oritsequivalent, adapted to be secured to the shoe, substantially as and for the pnr pose set forth.

2. The adjusthble swinginghrm, provided with the rotary file G, in combination with the clamp-bar, or its I equivalent, substantially as described.

3. The rotating circular file, arrangedon a verticnl,'or near1y vertical shaft, and operating substantially as and for the purpose described. h i v 4. The removable sleeved cap or plate J, for holding the shaft and circularfile in place as described. 5. The standard F and set ecrewf, in coiubination n'ith the dove-tail'slide C, for holding said slide in place on the clamp-bar as described. I

' JOHN JOHNSON.

Witnesses:

ALEX. MAHON, EDM. F. BROWN. 

